This movie is not the best adaptation of a Boileau et Narcejac book because of Périer's weak direction, but the mysterious story is still strong enough with the 45 t record gimmick and there are Darrieux, Auclair and Servais. Very far from being a masterpiece, it's still entertaining. From Boileau and Narcejac at that time, try "Maléfices" by Decoin, his last good noir movie.